Effects of Mg content and thermal treatments on optoelectronic and bending properties of transparent conductive indium tin oxide/AgMg bi-layer film

Lin, H.K.; Chen, H.A.; Huang, U. G.; Chang, C. M.; Huang, Jing

doi:10.1016/j.tsf.2020.137842

Cited by 2 publications

(1 citation statement)

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“…Moreover, one-dimensional (1D) material-based systems, such as CNTs and metallic nanowires, can cause heterogeneous uniformity, which directly results in spatially nonuniform optical transparency and sheet resistance. − When 1D materials form a percolating network structure, the contact resistance at several 1D–1D interfaces becomes another issue, which leads to degradation in the electrical performance of the TCE . To avoid such issues, another approach is to improve the mechanical stability of ITO-based TCEs by incorporating a metallic interlayer (e.g., ZrCu, AgMg, AgZr, CuMg, and graphene). − Although the mechanical stability of ITO improves in the presence of metallic interlayers, the metallic layer compromises the optical transmittance of TCEs and the fabrication process becomes complicated.…”

Section: Introductionmentioning

confidence: 99%

Transparent Molecular Adhesive Enabling Mechanically Stable ITO Thin Films

Bok

Seok

Kim

et al. 2021

ACS Appl. Mater. Interfaces

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With rapid advances in flexible electronics, transparent conductive electrodes (TCEs) have also been significantly developed as alternatives to the conventional indium tin oxide (ITO)-based material systems that exhibit low mechanical flexibility. Nanomaterial-based alternating materials, such as graphene, nanowire, and nanomesh, exhibit remarkable properties for TCE-based applications, such as high electrical conductivity, high optical transparency, and high mechanical stability. However, these nanomaterial-based systems lack scalability, which is a key requirement for practical applications, and exhibit a size-dependent property variation and inhomogeneous surface uniformity that limit reliable properties over a large area. Here, we exploited a conventional ITObased material platform; however, we incorporated a transparent molecular adhesive, 4-aminopyridine (4-AP), to improve mechanical flexibility. While the presence of 4-AP barely affected optical transmittance and sheet resistance, it improved interfacial adhesion between the substrate and ITO as well as formed a wavy surface, which could improve the mechanical flexibility. Under various mechanical tests, ITO/4-AP/poly(ethylene terephthalate) (PET) exhibited remarkably improved mechanical flexibility as compared with that of ITO/PET. Furthermore, ITO/4-AP/PET was utilized for a flexible Joule heater application having spatial uniformity of heat generation, voltage-dependent temperature control, and mechanical flexibility under repeated bending tests. This molecular adhesive could overcome the current limitations of material systems for flexible electronics.

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